63950140891 has 48 divisors (see below), whose sum is σ = 83734613760. Its totient is φ = 47428623360.

The previous prime is 63950140883. The next prime is 63950140909. The reversal of 63950140891 is 19804105936.

It is not a de Polignac number, because 63950140891 - 2³ = 63950140883 is a prime.

It is not an unprimeable number, because it can be changed into a prime (63950140841) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 16266196 + ... + 16270126.

It is an arithmetic number, because the mean of its divisors is an integer number (1744471120).

Almost surely, 2^63950140891 is an apocalyptic number.

63950140891 is a deficient number, since it is larger than the sum of its proper divisors (19784472869).

63950140891 is a wasteful number, since it uses less digits than its factorization.

63950140891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4164 (or 4067 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 46.

The spelling of 63950140891 in words is "sixty-three billion, nine hundred fifty million, one hundred forty thousand, eight hundred ninety-one".